The Russian Defense Ministry and the Irkut aircraft maker have signed a contract on the delivery of an additional 30 Su-30SM multirole fighter jets to the Russian Air Force by 2016.

The first contract between the Defense Ministry and Irkut for the delivery of 30 Su-30SMs was signed in March. The Russian Air Force received the first two Su-30SM aircraft on November 22.

“In line with the new contract, Irkut will build 30 additional aircraft of this type for the Defense Ministry by 2016,” the ministry said in a statement on Wednesday.

The Su-30SM is the latest development of the twin-seat Su-30 jet fighter family, itself a derivative of the long-serving single-seat Sukhoi Su-27, one of the air force’s most important warplanes.

The new aircraft has an improved radar, communications and identification-friend-or-foe system, new ejection seat and new weapons. It also has thrust-vectoring engine nozzles and canard fore planes, providing super-maneuverability at low air speeds.